Magiiine for cutting tin and gti-ie-r metal



UNITED STATES PATENT OFFICE.

WILLIAM BULKLEY AND OTIS M. INMAN, OF BERLIN, CONNECTICUT.

MACHINE FOR CUTTING TIN AND GTI-IER METAL.

Specification of Letters Patent No. 2,325, dated November 3, 1841.

To all fio/wm t may concern.'

Be it known that we, WM. Bonanni and Oris M. INMAN, ot Berlin, in the county of Hartford and State of Connecticut, have invented a new and nset'nl Improvement in Shears; and we declare that the following is a t'ull, clear, and exact description of the construction ot the same, reference being had to the annexed drawings, making apart ot the following speciication.

Figure l, is a perspective. Fig. 2, a longitudinal elevation.

A A Figs. l and .2 is a frame made ot cast iron ot' an elliptical form 2 feet and 8 inches in length and about 2 inches thick.

B B, are arbors (or axes) which the trame revolves on and 1, inches in diameter made ot cast steel, having a shoulder turned on it and passing tlnough the trame at Z the arbor B, being made tast (or stationary) it must work in the trame free.

H, H, is a screw which is turned down so as to press the clamps F F together and made of cast steel le of an inch in diameter, the lower part turning on a swivel at C, O, and revolving with the trame.

R, It, is a gage to govern the size ot' the circle to be cut, movable on the arbor P, P. The arbor is made of a small rod of iron inch in diameter and screwed into the trame at right angles. The gage B is made to slide tree in the arbor and held by a thumb screw y, y.

C, C, C, C, are studs movable in the slits X, X, X, X, int-he trame A made of iron, being Q. inches broad and of an inch thick, with a shoulder resting on the 'frame as seen at Fig. l., in perspective, and made tast in their respective places in the trame b'v means of the screws I, I.

D, I), I), D, are cutters made orn cast steel ot a conical form and about l inch across the base that being used as the edge of the cutters, and they revolving on their aXis IG, E, E, the edges coming in contact and held in their position by means of shoulders on the arbors E, E, as seen at S, Fig. 4. N being the arbor. M Fig. 3, being the cutter.

The metal to be cut being pnt between the clamps F, F, Figs. l and 2 the screw H, is run down upon. it holding it tast to its place as seen at W7, Fig. l, the size ot the circle to be cnt is first ascertained, and the gage R, and cutters I), D, moved to correspond, the arbor B, being made tast in a vise or by other means, motion being given to the frame A, the metal passes into the cutters D, D, and with one revolution of the trame cuts an entire circle, the metal remaining at rest, as also the arbor B, the screw H turning upon the clamp F, at the point O.

le do not claim as our invention the bow or frame, or its application to the arbor, nor do we claim the attachment of the shears so as to carry them around the arbor, as these have all been known before, but what we do claim as our invention and desire to secure by Let-ters Patent is- Attaching the studs in which the shears work to the bow or trame which receives the gudgeons or bearings of the arbor and which travels around on it, snbstantiallj,7 in the manner described.

IVILLIAM BULKLEY. OTIS M. INF/IAN.

Vitnesses SHERMAN 1WILcoX, Menton Roeirrs. 

